Publications by authors named "Brent Lee"

Current research has demonstrated that nonopioid multimodal analgesia decreases perioperative opioid consumption, postoperative nausea and vomiting (PONV), and pain scores. However, no research has been conducted to examine the patient outcomes of Merit-based Incentive Payment System (MIPS) 477. This study evaluates those outcomes following implementation of MIPS 477.

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Background: Analyzing adverse events data collected over a three-year period on all anesthetic cases, North American Partners in Anesthesia (NAPA), a nationwide anesthesia practice, found a correlation between certain high-risk clinical factors and a number of critical events. Seeking to reduce the incidence of critical adverse events associated with these high-risk factors, the quality team of the NAPA Anesthesia Patient Safety Institute (NAPSI) developed the Anesthesia Risk Alert (ARA) program, which guides clinicians in proactively applying targeted risk mitigation interventions in five specific clinical scenarios. NAPSI is NAPA's Patient Safety Organization (PSO).

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PIWI-interacting RNAs (piRNAs), small noncoding RNAs 24-35 nucleotides long, are essential for animal fertility. They play critical roles in a range of functions, including transposable element suppression, gene expression regulation, imprinting, and viral defense. In mammals, piRNAs are the most abundant small RNAs in adult testes and the only small RNAs that direct epigenetic modification of chromatin in the nucleus.

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Biological membranes are essential to preserve structural integrity and regulate functional properties through the permeability of nutrients, pharmaceutical drugs, and neurotransmitters of a living cell. The movement of acetylated and amidated phenylalanine (NAFA) across 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and 1-palmitoyl-2-oleoyl--glycero-3-phosphocholine (POPC) membrane bilayers is investigated to probe physical transport. The rate of transport is measured experimentally applying parallel artificial membrane permeation assay (PAMPA).

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Using a wearable electromyography (EMG) and an accelerometer sensor, classification of subject activity state (., walking, sitting, standing, or ankle circles) enables detection of prolonged "negative" activity states in which the calf muscles do not facilitate blood flow return via the deep veins of the leg. By employing machine learning classification on a multi-sensor wearable device, we are able to classify human subject state between "positive" and "negative" activities, and among each activity state, with greater than 95% accuracy.

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The time-resolved parallel artificial membrane permeability assay with fluorescence detection and comprehensive computer simulations are used to study the passive permeation of three aromatic dipeptides-N-acetyl-phenylalanineamide (NAFA), N-acetyltyrosineamide (NAYA), and N-acetyl-tryptophanamide (NATA) through a 1,2-dioleoyl-sn-glycero-3-phospocholine (DOPC) lipid bilayer. Measured permeation times and permeability coefficients show fastest translocation for NAFA, slowest for NAYA, and intermediate for NATA under physiological temperature and pH. Computationally, we perform umbrella sampling simulations to model the structure, dynamics, and interactions of the peptides as a function of z, the distance from lipid bilayer.

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Patients with Barrett's esophagus (BE) and cirrhosis who develop high-grade dysplasia (HGD) or adenocarcinoma in the setting of esophageal varices present a unique therapeutic dilemma. There is limited literature regarding the optimal management of varices prior to invasive procedures or surgery involving the distal esophagus. We present a case of variceal decompression with a transjugular intrahepatic portosystemic shunt (TIPS) allowing for successful endoscopic mucosal resection (EMR) of BE with HGD overlying esophageal varices.

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Background: Water infusion versus air insufflation during colonoscope insertion has been suggested to reduce patient discomfort and decrease sedation medication requirements. Warm water is thought to further facilitate colonoscopy perhaps by decreasing colon spasm.

Objective: To compare the utility of warm (35°-38°C) versus cool (20°-23°C) water infused during colonoscopic insertion by measuring patient sedation medication use and discomfort scores between the warm and cool water groups.

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Background: Compared with whites, Hispanics have lower incidence of and mortality from colorectal cancer. The purpose of this study was to determine whether asymptomatic Hispanics undergoing colonoscopy screening also have lower age-adjusted incidence of polyps ≥ 10 mm. Such data could be used to formulate future screening guidelines.

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Background: Implementation of consensus guidelines for esophageal variceal hemorrhage yields improved outcomes. We evaluated guideline adherence and outcomes after variceal hemorrhage at a university hospital (UH) and a staff-model health maintenance organization (HMO).

Study: Factors associated with short-term bleeding, infection, and death were retrospectively identified in UH (n=160) and HMO (n=123) patients with esophageal variceal hemorrhage from January 2000 to December 2006.

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Allele frequencies for fifteen STR loci, D3S1358, TH01, D21S11, D18S51, D2S1338, D5S818, D13S317, D7S820, D16S539, CSF1PO, D19S433, vWA, D8S1179, TPOX and FGA, were investigated in a Filipino ethnic group resident in the United States and in the Philippines. Statistical evaluation of the data collected indicated the population to be in Hardy-Weinberg equilibrium and therefore acceptable for calculations in forensic and family relatedness casework.

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Cases of measles that require hospitalization are a good marker of the burden of clinically severe measles in the United States. Measles hospitalizations routinely are monitored by the National Notifiable Disease Surveillance System (NNDSS). Our objectives were to describe measles hospitalizations reported to the NNDSS in 1985-2002, to use hospital discharge data from independent data sets (the National Hospital Discharge Survey [NHDS] [data available for 1985-1999] and the Health Care Investment Analysts [HCIA] hospital discharge database [data available for 1985-1996]) to provide additional estimates of total measles hospitalizations, and to compare trends in measles-associated hospitalizations.

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Background: In seven studies of the effectiveness of the varicella vaccine conducted since it was licensed, the effectiveness was 71 to 100 percent against disease of any severity and 95 to 100 percent against moderate and severe disease. We investigated an outbreak of varicella in a population of children with a high proportion of vaccinees who were attending a day-care center in a small community in New Hampshire.

Methods: Using standardized questionnaires, we collected information about the children's medical and vaccination history from parents and health care providers.

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